lkml.org 
[lkml]   [2014]   [Apr]   [15]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
Date
SubjectRe: [PATCH 08/20] cpufreq: exynos5440: Use cpufreq_for_each_entry macro for iteration
From
On 15 April 2014 02:39, Stratos Karafotis <stratosk@semaphore.gr> wrote:

> diff --git a/drivers/cpufreq/exynos5440-cpufreq.c b/drivers/cpufreq/exynos5440-cpufreq.c

> static void exynos_enable_dvfs(unsigned int cur_frequency)
> {
> - unsigned int tmp, i, cpu;
> + unsigned int tmp, cpu;
> struct cpufreq_frequency_table *freq_table = dvfs_info->freq_table;
> + struct cpufreq_frequency_table *pos;

Merge above two.

> /* Disable DVFS */
> __raw_writel(0, dvfs_info->base + XMU_DVFS_CTRL);
>
> @@ -182,15 +182,15 @@ static void exynos_enable_dvfs(unsigned int cur_frequency)
> __raw_writel(tmp, dvfs_info->base + XMU_PMUIRQEN);
>
> /* Set initial performance index */
> - for (i = 0; freq_table[i].frequency != CPUFREQ_TABLE_END; i++)
> - if (freq_table[i].frequency == cur_frequency)
> + cpufreq_for_each_entry(pos, freq_table) {
> + if (pos->frequency == cur_frequency)
> break;
> + }
>
> - if (freq_table[i].frequency == CPUFREQ_TABLE_END) {
> + if (pos->frequency == CPUFREQ_TABLE_END) {
> dev_crit(dvfs_info->dev, "Boot up frequency not supported\n");
> /* Assign the highest frequency */
> - i = 0;
> - cur_frequency = freq_table[i].frequency;
> + cur_frequency = freq_table->frequency;

First this is not readable enough and you introduced a bug here, see
below.

> }
>
> dev_info(dvfs_info->dev, "Setting dvfs initial frequency = %uKHZ",
> @@ -199,7 +199,7 @@ static void exynos_enable_dvfs(unsigned int cur_frequency)
> for (cpu = 0; cpu < CONFIG_NR_CPUS; cpu++) {
> tmp = __raw_readl(dvfs_info->base + XMU_C0_3_PSTATE + cpu * 4);
> tmp &= ~(P_VALUE_MASK << C0_3_PSTATE_NEW_SHIFT);
> - tmp |= (i << C0_3_PSTATE_NEW_SHIFT);
> + tmp |= ((pos - freq_table) << C0_3_PSTATE_NEW_SHIFT);

We used modified value of 'i' here earlier, i.e. 0 ..

> __raw_writel(tmp, dvfs_info->base + XMU_C0_3_PSTATE + cpu * 4);
> }
>
> --
> 1.9.0


\
 
 \ /
  Last update: 2014-04-15 08:21    [W:0.047 / U:21.940 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site